Pulka, J. and Piwonski, T. and Huyet, G. and Houlihan, John and Semenova, E. and Lematre, A. and Merghem, K. and Martinez, A. and Ramdane, A. (2012) Ultrafast response of tunnel injected quantum dot based semiconductor optical amplifiers in the 1300 nm range. Applied Physics Letters, 100 (7). ISSN 0003-6951
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Abstract
The ultrafast gain and refractive index dynamics of tunnel injected quantum dot based semiconductor optical amplifiers in the 1300 nm range are investigated using a heterodyne pump probe technique. In the gain regime, ground state wavelengths exhibit full gain recovery in less than 10 ps up to 3 times transparency, attributed to enhanced carrier refilling via the injector layer. The effect of the injector can also been seen in unusual phase dynamics at excited state wavelengths at this injection level.
| Item Type: | Article |
|---|---|
| Additional Information: | Times Cited: 0 Pulka, J. Piwonski, T. Huyet, G. Houlihan, J. Semenova, E. Lematre, A. Merghem, K. Martinez, A. Ramdane, A. |
| Departments or Groups: | Optics Research Group |
| Divisions: | School of Science > Department of Computing, Maths and Physics |
| Depositing User: | John Houlihan |
| Date Deposited: | 19 Nov 2012 16:18 |
| Last Modified: | 22 Aug 2016 10:26 |
| URI: | https://repository.wit.ie/id/eprint/2007 |
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